MMDVM Duplex Hotspot with OLED - DMR, P25, YSF, NXDN, Raspberry Pi

MMDVM Duplex Hotspot with OLED

A fully soldered MMDVM duplex hotspot module designed for amateur radio operators. Built around the MMDVM_HS firmware with dual ADF7021 chips, it supports simultaneous TX and RX on two DMR time slots. Compatible with all current Raspberry Pi models including the Pi Zero, and includes an OLED display for status readout.

Key Features

• Dual ADF7021 chips for true duplex operation (SLOT 1 and SLOT 2)
• 32-bit ARM processor for high performance
• Supports DMR, P25, D-Star, System Fusion (YSF), and NXDN
• UHF 430-450 MHz and VHF 144/220 MHz frequency support
• Up to 10 mW RF output power
• SMA antenna connectors (upper = TX, lower = RX)
• Onboard LEDs for TX, RX, PTT, and Mode status
• OLED display included
• Firmware pre-loaded, upgradeable via software
• Modem select: STM32_HS_GPIO
• Mounts on all Raspberry Pi models including Pi Zero
• Metal body, portable form factor

Package Contents

• MMDVM Duplex Hotspot Module with OLED x1
• Antenna x2

Battery not included. TX and RX frequencies should be set at least 10 MHz apart for optimal performance.